CSV to JSON

Online CSV to JSON converter for object arrays or array of arrays with delimiter and header settings.

Обработка выполняется локально в браузере. Данные не отправляются на сервер.

For this tool, processing runs locally in your browser and data is not sent to the server.

CSV to JSON is a free online converter for turning CSV tables into JSON arrays for scripts, no-code, API, tests, and imports. Processing runs locally in your browser.

What it does

Output

Processing

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How to use

Paste a CSV table with or without headers.
Choose delimiter: auto, comma, semicolon, tab, or custom.
Configure result structure: array of objects or array of arrays.
Copy JSON for scripts, no-code, API, tests, data import, or documentation.

More about this tool

CSV to JSON converter transforms a CSV table into a JSON array of objects or array of arrays.

Useful for scripts, no-code, API, test data, imports, documentation, and payload preparation. Choose column delimiter comma, semicolon, tab, or custom, use the first row as headers, skip empty rows, trim values, and optionally auto-detect types.

The service handles quoted values, quotes, and line breaks inside cells when using a CSV parser.

Processing runs locally in your browser.

Converts CSV to JSON
Supports column headers
Supports comma, semicolon, and tab
Can output array of objects or array of arrays
Shows table preview
Helps find CSV errors
Runs in the browser
Data is not sent to the server
No registration required

Frequently Asked Questions

How do I convert CSV to JSON?

Paste CSV, choose delimiter and result structure, then click Convert. The tool outputs a JSON array of objects or arrays.

Is a header row required?

For array of objects the first row is usually headers and becomes field names. Without headers you can use column1, column2, and so on.

Which delimiter should I choose?

Comma is common, but semicolon often appears in Excel CSV exports. Choose auto-detect or set delimiter manually.

Are quoted values supported?

Yes. A CSV parser handles quoted values such as "Ivan, Ivanov", quotes inside values, and line breaks inside cells.

Can numbers stay as strings?

Yes. By default all values can stay strings to avoid breaking phones, zip codes, SKUs, and IDs. Auto type detection can be enabled separately.

What about empty values?

Empty values can stay empty strings or become null if the corresponding setting is enabled.

What if rows have different column counts?

The tool shows a warning because such rows may produce incomplete or ambiguous JSON.

How is CSV to JSON different from JSON formatter?

CSV to JSON converts tabular data to JSON. JSON formatter works with ready JSON and makes it readable.

Is my data sent to the server?

No. Processing runs locally in your browser and data is not sent to the server.

Do I need to register?

No. The tool works without registration.

More about this tool

CSV to JSON converter transforms a CSV table into a JSON array of objects or array of arrays.

The service handles quoted values, quotes, and line breaks inside cells when using a CSV parser.

Processing runs locally in your browser.

Converts CSV to JSON
Supports column headers
Supports comma, semicolon, and tab
Can output array of objects or array of arrays
Shows table preview
Helps find CSV errors
Runs in the browser
Data is not sent to the server
No registration required

Frequently Asked Questions

How do I convert CSV to JSON?

Paste CSV, choose delimiter and result structure, then click Convert. The tool outputs a JSON array of objects or arrays.

Is a header row required?

For array of objects the first row is usually headers and becomes field names. Without headers you can use column1, column2, and so on.

Which delimiter should I choose?

Comma is common, but semicolon often appears in Excel CSV exports. Choose auto-detect or set delimiter manually.

Are quoted values supported?

Yes. A CSV parser handles quoted values such as "Ivan, Ivanov", quotes inside values, and line breaks inside cells.

Can numbers stay as strings?

Yes. By default all values can stay strings to avoid breaking phones, zip codes, SKUs, and IDs. Auto type detection can be enabled separately.

What about empty values?

Empty values can stay empty strings or become null if the corresponding setting is enabled.

What if rows have different column counts?

The tool shows a warning because such rows may produce incomplete or ambiguous JSON.

How is CSV to JSON different from JSON formatter?

CSV to JSON converts tabular data to JSON. JSON formatter works with ready JSON and makes it readable.

Is my data sent to the server?

No. Processing runs locally in your browser and data is not sent to the server.

Do I need to register?

No. The tool works without registration.